Eusebb mignatjlt



UNITED STATEs EUSEBE MIGNAULT, or NEW YORK, N. Y.,ASSIGNOR or ONE-HALF TO attains a. DAVIS, or SAME PLACE.

"PATENT OFFICE,

c HIM N EY-CA P.

SPECIFICATION forming part of Letters Patent No. 343,186, dated. June 8, 1886 I Application filed December 21,1885, Serial No. 186,206. (No model.)

the force of currents of air or wind to accomplish the desired positive ejection.

My improved ejector is specially well adapted for ventilating railroad passenger cars; but obviously maybe applied in any situation for producing .or accelerating an upward or outward current of air or gases from any tube, chimney, or compartment.

, he object of my invention is to provide an apparatus wherein the moving exterior currents of the atmosphere are concentrated and directed across the mouth of the ventilating shaft or tubein such manner as to pro- ,duce an effectual movement of air or gas through said shaft or tube, embodying at the same time simplicity of constru ction, compactness of arrangement, and durability of parts. To accomplish all of this, my improvements involve certain new and useful arrangements or combinationsof parts and peculiarities of construction, all of which will be herein first fully described, and then pointed out in the claims.

In the accompanying drawings, forming partof thisspecification, Figure I is a vertical axial section of an apparatus constructed and arranged for operation in accordance with my invention. Fig. 2 is an elevation in the direction looking toward the right of Fig. 1, and Fig. 3 is a similar view looking toward the left of Fig. 1. Fig. 4 is a horizontal section upon a plane passing through the upper tubes in Fig. 1. Fig. 5 is asectional elevation showing the improved ejector mounted so as to turn with the wind.

In all these figures like letters of reference parts.

B is the upper tube, having an enlarged mouth for receiving the incoming atmospheric current-s. This is joined with the shell at the margin of the outer opening, and extended therefrom inwardly to a point beyond the axis of the shell, being gradually contracted from the enlarged mouth to its discharge-orifice, so as to collect and condense or concentrate the incoming currents. Opposite the tube 13 is another tube,G, of which the inner mouth is ofconsiderably greater area than the inner mouth of B, and which is gradually contracted toward the exterior, as plainly shown. Sufficient space is left between the inner mouths of these tubes to permit the flow of air or gases from the shaft into tube 0 with the currents which are directed therein from the exterior through 13.

- D and E are two tubes, arrangedlikeB and C, exceptthat in this pair the enlarged inlet for exterior currents and the contracted outlet for outgoing currents are located in the walls of the shell at points opposite the corresponding openings in the other pair. In both pairs the inlet and discharge tubes are arranged so that their axes shall lie in the same straight line and at'right angles to the vertical axis of the shell, and all the tubes are located entirely within the shell. A current passing through 13 is gradually contracted so that it passes the space between Band 0 with considerable forccand velocity,the tendency, being to create a partial vacuum in this space, which induces the air and gases to flow from the shaft, and these are forcibly carried out of the shell through G,toge ther with the operat ing current, the outflow of the combined currents being accelerated by reason of being slightly contracted as they are forced through 0. \Vhen the wind blows directly into the enlarged mouth of B, of course the action will be most perfect. When blowing from the ICO opposite direction, it will be received by D The device'being constructed and arranged and perform like ofiices. When the two sets of tubes are employed,it becomes necessary to prevent the wind from blowing directly in at either direction will produce the necessary flow of air into and through the ejector.

The device is compact, and nottoo high for application upon cars.

All .the parts are easily constructed, and none of them areliableto get out oforder.

' The shell is symmetrical, and no part of the apparatus is unnecessarily exposed to damage by passingobjects.

H is a screen,placed over the shaftopening to prevent ci-nders and dust from entering the car .or other compartment.

Additional sets of eject'ioutubesmight be located in the shell, but they are unnecessary,

the two sets being sufficient to collect and di' I therefore apply for operation substantially as explained, will be found to admirably answer the purpose or object of theinvention as previously set forth.

Having now fully described my invention, what I claim as new herein, and desire to secure by Letters Patent, is-

1. In an ejector of the character herein set forth, the two tapering tubeslocated within the shell,leaving an open space between their inner ends, the inlet-tube being gradually conand for the purposes set forth 2. In an ejector of the character herein set forth, the combinatiomwith the tapering discharge-tubes located within the shell, of the hoods open at one side and applied upon the exterjorof the shell over the discharge-orb [ices of said tubes, substantially as and for the purposes explained.

In testimony that I claim the foregoing I have hereunto set my hand in the presence of two witnesses.

,EUSEBE DIIGNAULT.

Witnesses JOHN BUOKLER, WORTH OSGOQD.

It is hereby certified that the name of the assignee in Letters Patent No. 343,186, granted J nne 8, 1886, upon the applioation of Eusebe Mignault, of New York, New York, for an improvement in Chimney Gaps, was erroneously written and printed James R. Davis; that said name should have been written and printed James R. Davies; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Office.

Signed, countersigned, and sealed this 15th day of June, A. D. 1886.

H. L. MULDROW, Acting Secretary of the Interior.

[SEAL] Gountersigned M. V. MONTGOMERY,

Commissioner of Patents. 

